Formation Conditions of Structural Lithological Oil and Gas Reservoirs and Exploratory Prospects in the Southwest of the Qaidam Basin , China
详细信息
- 责任者：Zhang Xiaobao (Lanzhou Center of Petroleum Resources Research ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Ping Zhongwei
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(2)
- 关键词：油气藏形成 ; reservoir formation ; 柴达木盆地 ; Qaidam Basin
- 页码：p.240-249
- 图表：7 illus., 18 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
E13 of Southwestern Qaidam Basin possesses the geological conditions to form the structural lithologic reservoirs. The characteristics of source rocks and study of oil source correlation show that two large petroleum generative depressions developed in the Lower Tertiary. The existence of three structural slopes of Hongliuquan-Yuejin, Tiemulike and the Kunbei fault step zone in Southwestern Qaidam Basin, connecting the depressions of Zhahaquan and Yingxiongling, created large structural slope backgrounds for the formation of structural lithologic reservoirs. The Kunbei fault step zone and the Gasi faulted depression in Southwestern Qaidam Basin have structures of fault anticlines, fault noses and so on aligned in belts, with downdip direction adjacent to petroleum generative depressions, providing the local structural slope backgrounds for the formation of structural lithologic reservoirs.